(idle-update-delay): New variable.

diff --git a/lisp/simple.el b/lisp/simple.el
index aeaebbffb34f6f44f4bf967cb29262a3ab4ba441..b57239656659496003ace4518a4178082c0107ae 100644 (file)
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -4451,6 +4451,14 @@ See also `normal-erase-is-backspace'."
   (if (interactive-p)
       (message "Delete key deletes %s"
               (if normal-erase-is-backspace "forward" "backward"))))
+\f
+(defcustom idle-update-delay 0.5
+  "*Idle time delay before updating various things on the screen.
+Various Emacs features that update auxiliary information when point moves
+wait this many seconds after Emacs becomes idle before doing an update."
+  :type 'number
+  :group 'display
+  :version "21.4")
 
 
 ;; Minibuffer prompt stuff.